Improvement in post augebs



poses, but my invention has no r HENRY W. cAsWELL, or YARMOUTH, MAINE Letters .Patent 1Y0. 63,016, datedM'arch 19, 1867.

IMPROVEMENT IN POST AUGERS.

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TO ALL WHOM IT MAY ONCERN:

Be it knownn that I, HENRY W. CAswnLL, of Yarmouth, in the county of Cumberland, and State oi' Maine,

have invented a new und useful Improved Post Auger; and I hereby declare the following to .bea full, clear,

and exact description .of the same, which xvill enable-others to make and use my invention, reference being had to the accompanying drawings, forming part ofthis specification, in which- Figure 1 is a side view. I

Figuref, a bottom view.. My inventionis'connccted with an 'implement used to bore holes in the earth for the insertion of posts, in

the construction of fences, and for other purposes. 'DiiTerent styles ofboring apparatus are used for these purA elation to the boring de'vices themselves, being applicable, however, to them all; In all of these borers, when the uservhas penetratcd'the earth to the depth of a few inches, it becomes necessary to Withdrmv theauger in order to relieve it ot' the accumulation of soil upon it. In close, compact` soils, or where there is clay, andparticularly where the soil is moist or saturated' with Water, this is a matter requiring a considerable exertion of strength. If the earth isquite wet, andthe auger has penetrated six, eight, or ten inches, it will need more than the ordinary strength of a, man, when exerted in such 'manner and direction as it er the circumstances be, to withdrawthc borer from` the hole. Frequent retractions of the tool thus e of penetration into the ground, they are fatiguing. The purpose of my invention is to relieve the implement of this diiliculty attendant upon its use under suchcircumstances. It will be readily seen that the cause of the auger thus being into the hole it has made, is owing to the external pressure of thel atmosphere upon the wet or compact soil above, which prevents the-admission of air beneath the auger, so that, when raised, the user lifts not only the soil, but has also to overcome the resistance of the air, operating against h im by reason of the vacuum underneath the auger.` I ohviate this difficulty by attaching to the auger an air-tube leading from above the mouth of the hole to must und become necessary, and,v1vi`th any degre neath the soil upon the top of the borer, and relieving the user o have to lift atevery withdrawal. l

An example of a post auger new in use is s f so much weight which he would otherwise hewn in the drawing, having attached to the shaft thereof` the air-tube a. The lower aperturecf the air-tube is seen at a, iig. 2. I desire further tovspecify that my invention contemplates another-.form oi the application of this` principle, viz, by making the sha-ft of the auger itself hollow, with an aperture at er near its 'lower end, and'` an upper opening at or near thenpper end ofthe shaft, at any convenient point. When the supplemental tube a is usedas illustrated'in the drawingit may be attached to the shaft by rings, or in any convenient manner.

What I claim' as my invention, and desire to secure by Letters Patent, is

Combining With :t post auger an air-tube, substantially as and for the purposes specified. A Hi W. GASWELL.

Witnesses:

WILLIAM HENRY Cmrronn, EDWARD P. FUnLoNG.

its bottom, thus freely admitting air under- 

